Grain-hulling machine.



A. B. COUCH.

GRAIN HULLING MACHINE.

APPUCATION FILED AUG-26 19:6- 1,231,534. 7 Patented June 26,1937.

3 SHEETS-SHEET I.

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A. B. COUCH.

GRAIN HULLING MACHINE.

APPLICATION FILED AUG-26, 19x5.

LQ3L53$ Patented June 26, 1917.

3 SHEETSSHEET 2.

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GRAIN HULUNG MACHINE.

APPLICATION FILED AUG-26. I916- Partented June 26, 1937.

3 SHEETS-SHEET 3.

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II! IIIIIIII] lYlllll iil Z .w m H C 0 O C 5 Q UNITE STATE PATENT UFFIIQEO ALBERT B. COUCH, or rERRY, TEXAS, assrenon'ro BERYL COUCH, or PERRY, TEXAS.

GRAiiw-HCLLING MACHINE.

Ant etam fiied Ailgtit" 2e, 191's".

ToaZZ whom it may concern. a

Be it known that I; ALBI JfiT B. COUCH, citizen of the United States, residing at Perry, in the county of Falls and State of Texas, have invented certain nevv and useful Improvements in GrainHulliiig Machines, Of which the following is a specification, reference being had to the accompanying time ings.

This invention relates to certain improvements in grain hu'l l'in g machines" and has rela'tion more part-icularlyto it device (if this general character especially designed and adapted foruse' connectioif with rice and it is an object er the invention to providea novel and improved device of this general character including a rotatable cylinder provided With ahrading means to remove the hulls or the like from the grain together with a cooperating casing which is al'so'p'ro vided With an abrading member.

vide device of eluding a casing provided- With abradifigmember ca able of adjnstmntrelative to the cooperating cylinder to' facil'itate the ac tion upon the grain;

The invention also'ha's for an object to provide a device" of this general character including a cylinder provided With a friction surface or surfaces raised above the p'erip'h} ery of the cylinder roper and wherein said cylinder is provided with spirally disposed peripheral spines to cont-rol the fi'oi'v' of. the grain longitudinally of the cylinder;

The invention consists in the details of construction and in the combination and a rrangement of the severalparts of my im proved grain hu'll'ing machine whereby certain' important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advan tageous for useyall' as will be hereinafter more fully set forth.

The novel features of the invention Willi hereinafter be definitely claimed.

In order that my invention may be the better understood, I WillnoW proceedto describe the same With'reference to the 'accompanying drawings, Whe'rei'n r Figure 1- is a view in elevation of grain hull'er constructed in accordancevvith an embodiment of my invention; 7

Fig 2 is a vertical sectional view taken: transversely through the upper portion of the device as disclosed in Fig. 15;

Specification of Letters Patent.

this eneral character in;

Patented June 26, 191W. Serial-N0. 117,044.

Fig. 3 is a sectional view taken substantially on the line 3-3 of Fig. 2;

is a view in top plan otm'y improved cylinder as herein embodied; and

F 5 is an enlarged detail fragmentary View partly in elevation and partly in section illustrating a fastening means for the section-softhe casing as herein disclosed.

disclosed in the accompanying drawings, S denotes a supporting frame of a' construction which best meets the requiren'rents of practice and as illustmted in Fig. 1, is operat iiel-y mounted upon the housing H of the polishing mechanism with which my improved huller cooperates;

Operatively supported the frame S and on a predetermined transverse inclination is the frame F with which coacts the screening element E of any ordinary or preferred con} structi on. While the element E' is disclosed in the accompanying drawings as comprised of a wit-e mesh, it will be at once self-evident that foraminous sheet of material maybe employed With equal facility; The element E constitutes the loiver portion of a casing surrounding the eynnder (l and through which the hulls or the like separated from the grain are adapted to pass:

As herein set forth, the element E is main tai'ned in applied position relative to the frame F through the mediu'r'n of the supporting yokes l disposed transversely of the element and with which coact the screiv members 2 threaded through the oke's 3' depending from the frame F as is believed to be clearly shown in F igs. 1 and 3 of the drawings.

Resting upon the frame F is the upper portion 4 of the cylinder casing and as disclosed particularly in Fig. 2, said casinghas one margi nal portion pivotally connected, asat 5, W1t-lTflI6fFflIfie F, While the opposite margin of the portion a of the casing has coaoting thezro vith the holding cli'ps 6 piv otall'y engaged with the frame F and over lying a margin of the upper portion 4: of the casing, and threaded through the clips 6 are the screws 7 whereby it i'vill be perceived that thcii opel' portion 4 of the easing may be effectively maintained in applied position relative to the cylinder C.

One end of the upper portion: 4 of the casing is provided with the hopper A adapted to discharge Within the casing, the How ofjthe gr in from the hopper A Within the easing bei'i'ig' under control oi the slide valve 8, as is illustrated in Fig. 1 ofthe drawings.

The opposite extremity of the portion 1 of the casing is provided with the discharge spout D in communication with the interior of the cylinder G and through which the grain is adapted to be discharged. The flow of the grain through the spout D is under control of the valve 9 and as herein set forth, the spout D discharges within the chute 10 leading to the polishing mechanism.

11 denotes a shaft rotatably supported by the frame F and provided at one end with a pulley 12 whereby the same may be properly rotated, said pulley 12 being adapted to be coupled with a suitable source of power. I wish to state however, that I do not desire to be limited to any particular means for imparting the requisite rotation to the shaft 11.

The cylinder C as herein set forth and as particularly illustrated in Fig. 3, comprises three longitudinally alined sections 14, 15 and 16, each of which being keyed to the shaft 11 and having their adjacent ends in contact. The intermediate section 15 is of a length materially in excess of the length of each of the sections 14 and 16. The section 14 underlies the hopper A and is provided with the spiral vanes or spines 17 which serve to throw the grain as delivered from the hopper A toward the, intermediate section 15. The section 16 is provided with the vanes 18 substantially bowedshape in form and disposed reversely to the vanes or spines 17 and serve to prevent the grain from crowding against the adjacent end of the frame F and at the same time facilitate the discharge of the grain through the discharge spout D.

The periphery of the cylinder C is provided with a series of longitudinally disposed grooves 19 preferably three in number and equidistantly spaced and in each of which is seated an abrading member 20 formed of corundum or like material, and as is particularly illustrated in Figs. 2 and 3, the upper surface extends above the periphery of the section 15 proper and is arranged on a predetermined transverse curvature. It is also to be noted that the portions of the periphery of the section 15 intermediate the grooves 19 are provided with the spines 21 disposed in spiral relation with the angles of said spines gradually increasing from the receiving end of the section 15 toward the discharge end thereof and preferably ranging from an angle of to an angle of 15.

The spines 21 are also elevated above the periphery of the cylinder proper and serve to retard the flow of the grain longitudinally of the cylinder and thereby resulting to make the work more even from one end of the cylinder to the other and to equalize the impaction or friction upon the grain whereby the breaking of the grain is substantially entirely eliminated.

It is also to be observed that the forward portions of the spines 21 gradually rise from the periphery of the cylinder C to the highest point thereof in order to impart the passage of a greater volume of grain. It is also to be noted that the periphery of the cylinder G immediately adjacent the rear or discharge end of the spines 21 is depressed or grooved, as at 22, with the adjacent ends of the spines disposed on an abrupt drop. This permits the grain to adjust itself before passing over an abrading member 20 and also allows the grain to further distribute itself toward the discharge end of the cylinder C.

The longitudinal margin of the top portion 1 of the casing isprovided with a longitudinally disposed opening 23 substantially rectangular in form and in which is seated the swinging plate or door 24. As is particularly illustrated in Fig. 2, it is to be observed that the lower longitudinal margin of the plate or door 2 1 is provided with the bead 25 seated within a corresponding groove 26 formed in the lower wall of the opening 23, whereby said plate or door 2 1 is capable of swinging movement.

The opposite or free longitudinal margins of the door or plate 2% are provided with the laterally disposed arms 27 overlying the top portion 4: of the casing and have disposed therethrough the threaded members 28 pivotally engaged with the portion 1. The members 28 have in threaded engagement therewith the winged nuts 29 adapted to contactwith the outer faces of the arms 27 whereby it will be perceived that the friction upon the grain may be regulated. It has also been'found desirable to interpose between the arms 27 and the top portion 1 of the casing the expansible members 30 herein disclosed as coil springs encircling said members 28.

From the foregoing description, it is thought to be obvious that a grain hulling machine constructed in accordance with invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason 1 do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice, except as hereinafter claimed.

I claim:

1. A device of the character described comprising a casing provided with an inlet opening and an outlet opening, said openings being positioned adjacent the opposite ends of the casing, a rotatable member posi tioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces.

2. A device of the character described comprising a casing provided with an inlet opening and an outlet opening, said openings being positioned adjacent the opposite ends of the casing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spi-ally disposed spines intermediate said abrading surfaces, said spines extending beyond the periphery of the rotatable member and disposed on varying angles from one end of the cylinder towardthe other.

3. A- device of the character described comprising a casing provided with an inlet opening and an outlet opening, said openings being positioned adjacent the opposite ends of the casing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces, the periphery of the cylinder being provided with longitudinally disposed grooves between the rear ends of the spines and the adjacent abrading surfaces.

4. A device of the character described comprising a casing provided with an inlet opening and an outlet opening, said openings being positioned adjacent the opposite ends of the gasing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces, said abrading surfaces being disposed on an outward transverse curvature.

A device of the character described comprising a casing provided with an inlet opening and an outlet opening, said openings being positioned adjacent the opposite ends of the casing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces, and outstanding vanes carried by the rotatable member and underlying the inlet opening and serving to force the material delivered through said opening longitudinally of the rotatable member.

6. A device of the character described comprising a casing provided with an inlet opening and an outlet openlng, said openings being positioned adjacent the opposite ends of the casing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces, said rotatable member being provided with outstanding curved vanes serving to retard the flow longitudinally of the rotatable member and to facilitate the discharge through the outlet opening.

7. A device of the character described comprising a casing provided with an inlet opening and an outlet opening, said 0penings being positioned adjacent the opposite ends of the casing, a rotatable member positioned within the casing and provided with longitudinally disposed and circumferentially spaced abrading surfaces and with spirally disposed spines intermediate said abrading surfaces, and outstanding vanes carried by the rotatable member and underlying the inlet opening and serving to force the material delivered through said opening longitudinally of the rotatable member, said rotatable member being provided with out standing curved vanes serving to retard the flow longitudinally of the rotatable member and to facilitate the discharge through the outlet opening, said last named vanes being disposed on a curvature reverse to the first named vanes.

8. A device of the character described comprising a casing having a longitudinal portion open, stationary members disposed across the open portion of the casing, a screening element coacting with the open portion of the casing, supporting yokes for the screening element disposed transversely thereof, members threaded through the stationary members and coacting with the supporting yokes for adjusting. the screening element, and a cylinder rotatably mounted within the casing, said casing being pro vided with an inlet and an outlet adjacent the opposite ends of the cylinder.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses.

ALBERT B. COUCH. l Vitnesses R. A. GRIFFIN, R. E. Powuns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G. 

